Machine-control device



Oct. 7, 1930. s. HALVORSEN MACHINE CONTROL DEVICE Original Filed May 20, 1922 Jzoenxfi; r Jede r670 ryil 'o r5676 @IYM Patented Oct. 7, 1930 UNITED STATES PATENT orricr.

SEVERIN HALVORSEN, or CHICAGO, ILLINoIs, AssIeNo 'ro 'IH NEWSPAPER sworn ING MACHINE COMPANY, or SEATTLE, WASHINGTON, A CORPORATION OF wAsH- INGTON Original applications and my 20, 1922, Serial No. 582,462, and 'sejitembei 10, 1925, semi No. 661,816. Divided and this application filed July 23, 1926'. Serial No. 124,393.

parent from the accompanying specification and drawing, in which Fig. 1 is a sectional view in elevation of one form of my invention, and,

Fig. 2 is a circuit diagram showing my invention in connection with a motor starting rheostat.

The subject matter of this application is a division of my application Serial No. 661,816

filed September 10th, 1923, which in turn was a division of my application Serial No. 562,462 filed May 20, 1922.

In large electrically operated machines such as printing presses, paper feed machines and the like, it is often necessary for men to work inside them for threading and adjusting. This work frequently requires a small definite advancement of the movable parts which can be accomplished neither readily nor safely with the electric power. A rod or bar is therefore used which engages apertures in a wheel on a drive shaft and by suitable leverage the desired movement is thus made manually. If, while the bar is engaged with the wheel or while a man is inside the machine, another workman should start the motor great injury and damage might result. To prevent this possibility is the purpose of this invention. 4

In the accompanying drawings,

1 represents a motor driving a machine (not shown) such asa printing press or a paper feed machine, the motor being connected to a source of power 2 through astarting rheostat 3 and an auxiliary switch 4. Switch 4 comprises a body part 5, terminals 6, a contactor 7, springs 8 and an insulating button 9 projecting through an aperture in body part 5. A bar 10 for mechanically operating the machine, when not so used is kept in a holder 11 over switch 4 in such a position that the button 9 is depressed and contact between the terminals is made through contactor 7. With the bar 10 in this position power is available atrheostat 3 and the mac'hinemay be started and run. WVhen the bar is removed from its holder for manually operating the machine in connection with apertures in a drive shaft wheel, springs 8 lift contactor 7 away from terminals 6 and, the circuit being open at this point, the machine can not be started electrically.

It will thus be seen that a reliable and efficient locking and safety device is embodied in this invention. Whenever the bar is removed for adjustment or any other purpose the auxiliary switch is opened and the motor cant be started. The bar must be in v its proper place in order to start the machine and removing the bar'while it isrunning will stopthe motor.

It-will be understood that changes and modifications may be made without departing from the spirit of my invention.

Vhat I claim is: p

1. In a device of the class specified the combination of means forcontrolling the actuation ofa machine, said means including a member whereby the machine may be operated manuallyanda switch with which said member is adapted to cooperate to prevent the *actuation'of the machine upon disassociationof'said member and said switch.

2. In a device of the class specified, the combination of means for driving a machine, means for controlling the actuation of said driving means, said means including a switch and means'whei'eby the machine may be actuated, saidlast mentioned means-being adapted to engage the switch and permit the opera tion of said machine by saiddrivin means.

3. In a device of theclass specified includ inga switch and a motor-driven machine controlled-thereby, a removable element normally associated with the said switch for rendering the motor operable, said element when removed rendering the motor incapable of driving the machine, but said element being then available to advance the machine to any desired position.

41. In a device of the class specified a manually operable element for actuating a machine and means cooperable therewith for preventing operation of said machine by power means when said element and means are out of cooperative position.

5. In a device of the class specified a circuit controlling means whereby a circuit is inoperative when a barcooperable therewith is out of its normal position and the said bar, when not cooperating with the circuit controlling means, being available for manually operating the machine.

6. In a device of the class specified a switch having a projection for operation, a member for actuating said projection, said member being detachable therefrom to operate a machine.

7. In a device of the class specified, a switch having an extended portion for operation, a member for actuating said extended portion, said member being detachable therefrom to prevent operation of devices controlled by said switch.

8. In a device of the class specified the com bination of a switch having a movable contact member and a holder for a rod or bar, said holder being arranged above the switch so that when the bar is in position in the holder the'contact member will be actuated'and the switch having spring means for moving said contact member when the rod orbar is withdrawn.

9. In a device of the class specified the combination of an electric. switch having a movable controlling member, a holder for a rod or bar associated with said switch, and a rod or bar adapted to fit into said holder and become associated with said controlling member for influencing the action of the switch. j I r 10. The combination of an electric switch having a movable controlling member eX- tending upwardly and provided with a con tact portion and a holder for a rod or bar located above said switch so that a rod or bar in the holder may cooperate with said contact portion of saidimovable member to control the switch.

11;. The combination of an electric switch provided with a vertically adjustable controlling member, spring means tending to move said controlling member upward, a contact portion on said controlling member,and a holder arranged above the switch and adaptedtohold a rod or bar in position to cooperate with said member. 7

12. Theeombination of an electric switch having a vertically adjustable spring con-.

arranged above the switch, and a rod or bar adapted to fit into the holder and cooperate with said projection.

13. The combination of an electric switch provided with a vertically adjustable spring controlled Contact member having an upwardly extendingprojection, said contact member being enclosed in a housing and said contact projection be'ingextended through the housing and made of insulating material, and a holder mounted above said switch and having a vertically arranged aperture in alignment with said projection.

14:. The combination of an electric switch provided with a vertically adjustable spring controlled contact member having an upwardly extending projection, said contact member being enclosed in a housing and said contact projection being extended through the housing and made of insulating material, a holder mounted above said switch and having a vertically arranged aperture in alignment with said projection, and a rod or bar adapted to fit into said aperture.

7 15. In a device of the class described, the combination of an element adapted when away from normal inoperative position to be utilized in mechanically operating a machine means for electrically operating the machine and means for preventing electrical operation of the machine when said element is away from said inoperative position.

In witness whereof, I have hereunto subscribed my name this 21st day of July, A. D.

SEVERIN HALVORSEN.

trolled controlling member provided with an upwardly extending contact portion, a holder 

